The Interference Check tool does not filter out results for elements assigned to various Design Options that "interfere" with one another. Keep this in mind the next time you are reviewing the results. You'll have a lot a "meaningless" collisions if you have any number of of options.
You can open the report in Word and use Find/Replace to highlight results that include Options as part of the interference information to make it a little easier to "evaluate/ignore" them.
The reporting process could use some more options like: Ignore Design Options, include interference between element in the same option, primary options and main model. It would also be great to be able to check two linked models against each other from within the host.